1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
17 * MOXA Intellio Series Driver
23 #include <linux/module.h>
24 #include <linux/types.h>
26 #include <linux/ioport.h>
27 #include <linux/errno.h>
28 #include <linux/signal.h>
29 #include <linux/sched.h>
30 #include <linux/timer.h>
31 #include <linux/interrupt.h>
32 #include <linux/tty.h>
33 #include <linux/tty_flip.h>
34 #include <linux/major.h>
35 #include <linux/string.h>
36 #include <linux/fcntl.h>
37 #include <linux/ptrace.h>
38 #include <linux/serial.h>
39 #include <linux/tty_driver.h>
40 #include <linux/delay.h>
41 #include <linux/pci.h>
42 #include <linux/init.h>
43 #include <linux/bitops.h>
45 #include <asm/system.h>
47 #include <asm/uaccess.h>
49 #define MOXA_VERSION "5.1k"
52 #define MOXACUMAJOR 173
54 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
55 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
57 #define MAX_BOARDS 4 /* Don't change this value */
58 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
59 #define MAX_PORTS 128 /* Don't change this value */
62 * Define the Moxa PCI vendor and device IDs.
64 #define MOXA_BUS_TYPE_ISA 0
65 #define MOXA_BUS_TYPE_PCI 1
68 MOXA_BOARD_C218_PCI
= 1,
75 static char *moxa_brdname
[] =
77 "C218 Turbo PCI series",
78 "C218 Turbo ISA series",
79 "C320 Turbo PCI series",
80 "C320 Turbo ISA series",
85 static struct pci_device_id moxa_pcibrds
[] = {
86 { PCI_DEVICE(PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C218
),
87 .driver_data
= MOXA_BOARD_C218_PCI
},
88 { PCI_DEVICE(PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C320
),
89 .driver_data
= MOXA_BOARD_C320_PCI
},
90 { PCI_DEVICE(PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP204J
),
91 .driver_data
= MOXA_BOARD_CP204J
},
94 MODULE_DEVICE_TABLE(pci
, moxa_pcibrds
);
95 #endif /* CONFIG_PCI */
97 typedef struct _moxa_isa_board_conf
{
100 unsigned long baseAddr
;
101 } moxa_isa_board_conf
;
103 static moxa_isa_board_conf moxa_isa_boards
[] =
105 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
108 typedef struct _moxa_pci_devinfo
{
111 struct pci_dev
*pdev
;
114 typedef struct _moxa_board_conf
{
117 unsigned long baseAddr
;
119 moxa_pci_devinfo pciInfo
;
122 static moxa_board_conf moxa_boards
[MAX_BOARDS
];
123 static void __iomem
*moxaBaseAddr
[MAX_BOARDS
];
124 static int loadstat
[MAX_BOARDS
];
130 unsigned short closing_wait
;
133 long event
; /* long req'd for set_bit --RR */
135 unsigned long statusflags
;
136 struct tty_struct
*tty
;
138 wait_queue_head_t open_wait
;
139 wait_queue_head_t close_wait
;
142 struct mxser_mstatus
{
150 static struct mxser_mstatus GMStatus
[MAX_PORTS
];
153 #define TXSTOPPED 0x1
155 #define EMPTYWAIT 0x4
158 #define SERIAL_DO_RESTART
161 #define SERIAL_TYPE_NORMAL 1
163 #define WAKEUP_CHARS 256
165 #define PORTNO(x) ((x)->index)
167 static int verbose
= 0;
168 static int ttymajor
= MOXAMAJOR
;
169 /* Variables for insmod */
171 static int baseaddr
[4];
173 static int numports
[4];
176 MODULE_AUTHOR("William Chen");
177 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
178 MODULE_LICENSE("GPL");
180 module_param_array(type
, int, NULL
, 0);
181 module_param_array(baseaddr
, int, NULL
, 0);
182 module_param_array(numports
, int, NULL
, 0);
184 module_param(ttymajor
, int, 0);
185 module_param(verbose
, bool, 0644);
190 static int moxa_open(struct tty_struct
*, struct file
*);
191 static void moxa_close(struct tty_struct
*, struct file
*);
192 static int moxa_write(struct tty_struct
*, const unsigned char *, int);
193 static int moxa_write_room(struct tty_struct
*);
194 static void moxa_flush_buffer(struct tty_struct
*);
195 static int moxa_chars_in_buffer(struct tty_struct
*);
196 static void moxa_flush_chars(struct tty_struct
*);
197 static void moxa_put_char(struct tty_struct
*, unsigned char);
198 static int moxa_ioctl(struct tty_struct
*, struct file
*, unsigned int, unsigned long);
199 static void moxa_throttle(struct tty_struct
*);
200 static void moxa_unthrottle(struct tty_struct
*);
201 static void moxa_set_termios(struct tty_struct
*, struct ktermios
*);
202 static void moxa_stop(struct tty_struct
*);
203 static void moxa_start(struct tty_struct
*);
204 static void moxa_hangup(struct tty_struct
*);
205 static int moxa_tiocmget(struct tty_struct
*tty
, struct file
*file
);
206 static int moxa_tiocmset(struct tty_struct
*tty
, struct file
*file
,
207 unsigned int set
, unsigned int clear
);
208 static void moxa_poll(unsigned long);
209 static void set_tty_param(struct tty_struct
*);
210 static int block_till_ready(struct tty_struct
*, struct file
*,
212 static void setup_empty_event(struct tty_struct
*);
213 static void check_xmit_empty(unsigned long);
214 static void shut_down(struct moxa_str
*);
215 static void receive_data(struct moxa_str
*);
217 * moxa board interface functions:
219 static void MoxaDriverInit(void);
220 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
221 static int MoxaDriverPoll(void);
222 static int MoxaPortsOfCard(int);
223 static int MoxaPortIsValid(int);
224 static void MoxaPortEnable(int);
225 static void MoxaPortDisable(int);
226 static long MoxaPortGetMaxBaud(int);
227 static long MoxaPortSetBaud(int, long);
228 static int MoxaPortSetTermio(int, struct ktermios
*, speed_t
);
229 static int MoxaPortGetLineOut(int, int *, int *);
230 static void MoxaPortLineCtrl(int, int, int);
231 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
232 static int MoxaPortLineStatus(int);
233 static int MoxaPortDCDChange(int);
234 static int MoxaPortDCDON(int);
235 static void MoxaPortFlushData(int, int);
236 static int MoxaPortWriteData(int, unsigned char *, int);
237 static int MoxaPortReadData(int, struct tty_struct
*tty
);
238 static int MoxaPortTxQueue(int);
239 static int MoxaPortRxQueue(int);
240 static int MoxaPortTxFree(int);
241 static void MoxaPortTxDisable(int);
242 static void MoxaPortTxEnable(int);
243 static int MoxaPortResetBrkCnt(int);
244 static void MoxaPortSendBreak(int, int);
245 static int moxa_get_serial_info(struct moxa_str
*, struct serial_struct __user
*);
246 static int moxa_set_serial_info(struct moxa_str
*, struct serial_struct __user
*);
247 static void MoxaSetFifo(int port
, int enable
);
249 static const struct tty_operations moxa_ops
= {
253 .write_room
= moxa_write_room
,
254 .flush_buffer
= moxa_flush_buffer
,
255 .chars_in_buffer
= moxa_chars_in_buffer
,
256 .flush_chars
= moxa_flush_chars
,
257 .put_char
= moxa_put_char
,
259 .throttle
= moxa_throttle
,
260 .unthrottle
= moxa_unthrottle
,
261 .set_termios
= moxa_set_termios
,
264 .hangup
= moxa_hangup
,
265 .tiocmget
= moxa_tiocmget
,
266 .tiocmset
= moxa_tiocmset
,
269 static struct tty_driver
*moxaDriver
;
270 static struct moxa_str moxaChannels
[MAX_PORTS
];
271 static DEFINE_TIMER(moxaTimer
, moxa_poll
, 0, 0);
272 static struct timer_list moxaEmptyTimer
[MAX_PORTS
];
273 static DEFINE_SPINLOCK(moxa_lock
);
276 static int moxa_get_PCI_conf(struct pci_dev
*p
, int board_type
, moxa_board_conf
* board
)
278 board
->baseAddr
= pci_resource_start (p
, 2);
279 board
->boardType
= board_type
;
280 switch (board_type
) {
281 case MOXA_BOARD_C218_ISA
:
282 case MOXA_BOARD_C218_PCI
:
286 case MOXA_BOARD_CP204J
:
293 board
->busType
= MOXA_BUS_TYPE_PCI
;
294 board
->pciInfo
.busNum
= p
->bus
->number
;
295 board
->pciInfo
.devNum
= p
->devfn
>> 3;
296 board
->pciInfo
.pdev
= p
;
297 /* don't lose the reference in the next pci_get_device iteration */
302 #endif /* CONFIG_PCI */
304 static int __init
moxa_init(void)
309 printk(KERN_INFO
"MOXA Intellio family driver version %s\n", MOXA_VERSION
);
310 moxaDriver
= alloc_tty_driver(MAX_PORTS
+ 1);
314 moxaDriver
->owner
= THIS_MODULE
;
315 moxaDriver
->name
= "ttyMX";
316 moxaDriver
->major
= ttymajor
;
317 moxaDriver
->minor_start
= 0;
318 moxaDriver
->type
= TTY_DRIVER_TYPE_SERIAL
;
319 moxaDriver
->subtype
= SERIAL_TYPE_NORMAL
;
320 moxaDriver
->init_termios
= tty_std_termios
;
321 moxaDriver
->init_termios
.c_cflag
= B9600
| CS8
| CREAD
| CLOCAL
| HUPCL
;
322 moxaDriver
->init_termios
.c_ispeed
= 9600;
323 moxaDriver
->init_termios
.c_ospeed
= 9600;
324 moxaDriver
->flags
= TTY_DRIVER_REAL_RAW
;
325 tty_set_operations(moxaDriver
, &moxa_ops
);
327 for (i
= 0, ch
= moxaChannels
; i
< MAX_PORTS
; i
++, ch
++) {
328 ch
->type
= PORT_16550A
;
330 ch
->close_delay
= 5 * HZ
/ 10;
331 ch
->closing_wait
= 30 * HZ
;
332 ch
->cflag
= B9600
| CS8
| CREAD
| CLOCAL
| HUPCL
;
333 init_waitqueue_head(&ch
->open_wait
);
334 init_waitqueue_head(&ch
->close_wait
);
337 printk("Tty devices major number = %d\n", ttymajor
);
339 if (tty_register_driver(moxaDriver
)) {
340 printk(KERN_ERR
"Couldn't install MOXA Smartio family driver !\n");
341 put_tty_driver(moxaDriver
);
344 for (i
= 0; i
< MAX_PORTS
; i
++)
345 setup_timer(&moxaEmptyTimer
[i
], check_xmit_empty
,
346 (unsigned long)&moxaChannels
[i
]);
348 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
350 /* Find the boards defined in source code */
352 for (i
= 0; i
< MAX_BOARDS
; i
++) {
353 if ((moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C218_ISA
) ||
354 (moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C320_ISA
)) {
355 moxa_boards
[numBoards
].boardType
= moxa_isa_boards
[i
].boardType
;
356 if (moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C218_ISA
)
357 moxa_boards
[numBoards
].numPorts
= 8;
359 moxa_boards
[numBoards
].numPorts
= moxa_isa_boards
[i
].numPorts
;
360 moxa_boards
[numBoards
].busType
= MOXA_BUS_TYPE_ISA
;
361 moxa_boards
[numBoards
].baseAddr
= moxa_isa_boards
[i
].baseAddr
;
363 printk("Board %2d: %s board(baseAddr=%lx)\n",
365 moxa_brdname
[moxa_boards
[numBoards
].boardType
- 1],
366 moxa_boards
[numBoards
].baseAddr
);
370 /* Find the boards defined form module args. */
372 for (i
= 0; i
< MAX_BOARDS
; i
++) {
373 if ((type
[i
] == MOXA_BOARD_C218_ISA
) ||
374 (type
[i
] == MOXA_BOARD_C320_ISA
)) {
376 printk("Board %2d: %s board(baseAddr=%lx)\n",
378 moxa_brdname
[type
[i
] - 1],
379 (unsigned long) baseaddr
[i
]);
380 if (numBoards
>= MAX_BOARDS
) {
382 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS
);
385 moxa_boards
[numBoards
].boardType
= type
[i
];
386 if (moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C218_ISA
)
387 moxa_boards
[numBoards
].numPorts
= 8;
389 moxa_boards
[numBoards
].numPorts
= numports
[i
];
390 moxa_boards
[numBoards
].busType
= MOXA_BUS_TYPE_ISA
;
391 moxa_boards
[numBoards
].baseAddr
= baseaddr
[i
];
396 /* Find PCI boards here */
399 struct pci_dev
*p
= NULL
;
400 int n
= ARRAY_SIZE(moxa_pcibrds
) - 1;
403 while ((p
= pci_get_device(moxa_pcibrds
[i
].vendor
, moxa_pcibrds
[i
].device
, p
))!=NULL
)
405 if (pci_enable_device(p
))
407 if (numBoards
>= MAX_BOARDS
) {
409 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS
);
411 moxa_get_PCI_conf(p
, moxa_pcibrds
[i
].driver_data
,
412 &moxa_boards
[numBoards
]);
420 for (i
= 0; i
< numBoards
; i
++) {
421 moxaBaseAddr
[i
] = ioremap((unsigned long) moxa_boards
[i
].baseAddr
, 0x4000);
427 static void __exit
moxa_exit(void)
432 printk("Unloading module moxa ...\n");
434 del_timer(&moxaTimer
);
436 for (i
= 0; i
< MAX_PORTS
; i
++)
437 del_timer(&moxaEmptyTimer
[i
]);
439 if (tty_unregister_driver(moxaDriver
))
440 printk("Couldn't unregister MOXA Intellio family serial driver\n");
441 put_tty_driver(moxaDriver
);
443 for (i
= 0; i
< MAX_BOARDS
; i
++) {
445 iounmap(moxaBaseAddr
[i
]);
446 if (moxa_boards
[i
].busType
== MOXA_BUS_TYPE_PCI
)
447 pci_dev_put(moxa_boards
[i
].pciInfo
.pdev
);
454 module_init(moxa_init
);
455 module_exit(moxa_exit
);
457 static int moxa_open(struct tty_struct
*tty
, struct file
*filp
)
464 if (port
== MAX_PORTS
) {
467 if (!MoxaPortIsValid(port
)) {
468 tty
->driver_data
= NULL
;
472 ch
= &moxaChannels
[port
];
474 tty
->driver_data
= ch
;
476 if (!(ch
->asyncflags
& ASYNC_INITIALIZED
)) {
479 MoxaPortLineCtrl(ch
->port
, 1, 1);
480 MoxaPortEnable(ch
->port
);
481 ch
->asyncflags
|= ASYNC_INITIALIZED
;
483 retval
= block_till_ready(tty
, filp
, ch
);
485 moxa_unthrottle(tty
);
487 if (ch
->type
== PORT_16550A
) {
488 MoxaSetFifo(ch
->port
, 1);
490 MoxaSetFifo(ch
->port
, 0);
496 static void moxa_close(struct tty_struct
*tty
, struct file
*filp
)
502 if (port
== MAX_PORTS
) {
505 if (!MoxaPortIsValid(port
)) {
506 #ifdef SERIAL_DEBUG_CLOSE
507 printk("Invalid portno in moxa_close\n");
509 tty
->driver_data
= NULL
;
512 if (tty
->driver_data
== NULL
) {
515 if (tty_hung_up_p(filp
)) {
518 ch
= (struct moxa_str
*) tty
->driver_data
;
520 if ((tty
->count
== 1) && (ch
->count
!= 1)) {
521 printk("moxa_close: bad serial port count; tty->count is 1, "
522 "ch->count is %d\n", ch
->count
);
525 if (--ch
->count
< 0) {
526 printk("moxa_close: bad serial port count, device=%s\n",
533 ch
->asyncflags
|= ASYNC_CLOSING
;
535 ch
->cflag
= tty
->termios
->c_cflag
;
536 if (ch
->asyncflags
& ASYNC_INITIALIZED
) {
537 setup_empty_event(tty
);
538 tty_wait_until_sent(tty
, 30 * HZ
); /* 30 seconds timeout */
539 del_timer(&moxaEmptyTimer
[ch
->port
]);
542 MoxaPortFlushData(port
, 2);
544 if (tty
->driver
->flush_buffer
)
545 tty
->driver
->flush_buffer(tty
);
546 tty_ldisc_flush(tty
);
551 if (ch
->blocked_open
) {
552 if (ch
->close_delay
) {
553 msleep_interruptible(jiffies_to_msecs(ch
->close_delay
));
555 wake_up_interruptible(&ch
->open_wait
);
557 ch
->asyncflags
&= ~(ASYNC_NORMAL_ACTIVE
| ASYNC_CLOSING
);
558 wake_up_interruptible(&ch
->close_wait
);
561 static int moxa_write(struct tty_struct
*tty
,
562 const unsigned char *buf
, int count
)
568 ch
= (struct moxa_str
*) tty
->driver_data
;
573 spin_lock_irqsave(&moxa_lock
, flags
);
574 len
= MoxaPortWriteData(port
, (unsigned char *) buf
, count
);
575 spin_unlock_irqrestore(&moxa_lock
, flags
);
577 /*********************************************
578 if ( !(ch->statusflags & LOWWAIT) &&
579 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
580 ************************************************/
581 ch
->statusflags
|= LOWWAIT
;
585 static int moxa_write_room(struct tty_struct
*tty
)
591 ch
= (struct moxa_str
*) tty
->driver_data
;
594 return (MoxaPortTxFree(ch
->port
));
597 static void moxa_flush_buffer(struct tty_struct
*tty
)
599 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
603 MoxaPortFlushData(ch
->port
, 1);
607 static int moxa_chars_in_buffer(struct tty_struct
*tty
)
610 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
613 * Sigh...I have to check if driver_data is NULL here, because
614 * if an open() fails, the TTY subsystem eventually calls
615 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
616 * routine. And since the open() failed, we return 0 here. TDJ
620 chars
= MoxaPortTxQueue(ch
->port
);
623 * Make it possible to wakeup anything waiting for output
624 * in tty_ioctl.c, etc.
626 if (!(ch
->statusflags
& EMPTYWAIT
))
627 setup_empty_event(tty
);
632 static void moxa_flush_chars(struct tty_struct
*tty
)
635 * Don't think I need this, because this is called to empty the TX
636 * buffer for the 16450, 16550, etc.
640 static void moxa_put_char(struct tty_struct
*tty
, unsigned char c
)
646 ch
= (struct moxa_str
*) tty
->driver_data
;
650 spin_lock_irqsave(&moxa_lock
, flags
);
651 MoxaPortWriteData(port
, &c
, 1);
652 spin_unlock_irqrestore(&moxa_lock
, flags
);
653 /************************************************
654 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
655 *************************************************/
656 ch
->statusflags
|= LOWWAIT
;
659 static int moxa_tiocmget(struct tty_struct
*tty
, struct file
*file
)
661 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
663 int flag
= 0, dtr
, rts
;
666 if ((port
!= MAX_PORTS
) && (!ch
))
669 MoxaPortGetLineOut(ch
->port
, &dtr
, &rts
);
674 dtr
= MoxaPortLineStatus(ch
->port
);
684 static int moxa_tiocmset(struct tty_struct
*tty
, struct file
*file
,
685 unsigned int set
, unsigned int clear
)
687 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
692 if ((port
!= MAX_PORTS
) && (!ch
))
695 MoxaPortGetLineOut(ch
->port
, &dtr
, &rts
);
700 if (clear
& TIOCM_RTS
)
702 if (clear
& TIOCM_DTR
)
704 MoxaPortLineCtrl(ch
->port
, dtr
, rts
);
708 static int moxa_ioctl(struct tty_struct
*tty
, struct file
*file
,
709 unsigned int cmd
, unsigned long arg
)
711 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
713 void __user
*argp
= (void __user
*)arg
;
717 if ((port
!= MAX_PORTS
) && (!ch
))
721 case TCSBRK
: /* SVID version: non-zero arg --> no break */
722 retval
= tty_check_change(tty
);
725 setup_empty_event(tty
);
726 tty_wait_until_sent(tty
, 0);
728 MoxaPortSendBreak(ch
->port
, 0);
730 case TCSBRKP
: /* support for POSIX tcsendbreak() */
731 retval
= tty_check_change(tty
);
734 setup_empty_event(tty
);
735 tty_wait_until_sent(tty
, 0);
736 MoxaPortSendBreak(ch
->port
, arg
);
739 return put_user(C_CLOCAL(tty
) ? 1 : 0, (unsigned long __user
*) argp
);
741 if(get_user(retval
, (unsigned long __user
*) argp
))
744 tty
->termios
->c_cflag
= ((tty
->termios
->c_cflag
& ~CLOCAL
) |
747 ch
->asyncflags
&= ~ASYNC_CHECK_CD
;
749 ch
->asyncflags
|= ASYNC_CHECK_CD
;
752 return moxa_get_serial_info(ch
, argp
);
755 return moxa_set_serial_info(ch
, argp
);
757 retval
= MoxaDriverIoctl(cmd
, arg
, port
);
762 static void moxa_throttle(struct tty_struct
*tty
)
764 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
766 ch
->statusflags
|= THROTTLE
;
769 static void moxa_unthrottle(struct tty_struct
*tty
)
771 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
773 ch
->statusflags
&= ~THROTTLE
;
776 static void moxa_set_termios(struct tty_struct
*tty
,
777 struct ktermios
*old_termios
)
779 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
784 if (!(old_termios
->c_cflag
& CLOCAL
) &&
785 (tty
->termios
->c_cflag
& CLOCAL
))
786 wake_up_interruptible(&ch
->open_wait
);
789 static void moxa_stop(struct tty_struct
*tty
)
791 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
795 MoxaPortTxDisable(ch
->port
);
796 ch
->statusflags
|= TXSTOPPED
;
800 static void moxa_start(struct tty_struct
*tty
)
802 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
807 if (!(ch
->statusflags
& TXSTOPPED
))
810 MoxaPortTxEnable(ch
->port
);
811 ch
->statusflags
&= ~TXSTOPPED
;
814 static void moxa_hangup(struct tty_struct
*tty
)
816 struct moxa_str
*ch
= (struct moxa_str
*) tty
->driver_data
;
818 moxa_flush_buffer(tty
);
822 ch
->asyncflags
&= ~ASYNC_NORMAL_ACTIVE
;
824 wake_up_interruptible(&ch
->open_wait
);
827 static void moxa_poll(unsigned long ignored
)
831 struct tty_struct
*tp
;
834 del_timer(&moxaTimer
);
836 if (MoxaDriverPoll() < 0) {
837 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
840 for (card
= 0; card
< MAX_BOARDS
; card
++) {
841 if ((ports
= MoxaPortsOfCard(card
)) <= 0)
843 ch
= &moxaChannels
[card
* MAX_PORTS_PER_BOARD
];
844 for (i
= 0; i
< ports
; i
++, ch
++) {
845 if ((ch
->asyncflags
& ASYNC_INITIALIZED
) == 0)
847 if (!(ch
->statusflags
& THROTTLE
) &&
848 (MoxaPortRxQueue(ch
->port
) > 0))
850 if ((tp
= ch
->tty
) == 0)
852 if (ch
->statusflags
& LOWWAIT
) {
853 if (MoxaPortTxQueue(ch
->port
) <= WAKEUP_CHARS
) {
855 ch
->statusflags
&= ~LOWWAIT
;
860 if (!I_IGNBRK(tp
) && (MoxaPortResetBrkCnt(ch
->port
) > 0)) {
861 tty_insert_flip_char(tp
, 0, TTY_BREAK
);
862 tty_schedule_flip(tp
);
864 if (MoxaPortDCDChange(ch
->port
)) {
865 if (ch
->asyncflags
& ASYNC_CHECK_CD
) {
866 if (MoxaPortDCDON(ch
->port
))
867 wake_up_interruptible(&ch
->open_wait
);
870 wake_up_interruptible(&ch
->open_wait
);
871 ch
->asyncflags
&= ~ASYNC_NORMAL_ACTIVE
;
878 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
881 /******************************************************************************/
883 static void set_tty_param(struct tty_struct
*tty
)
885 register struct ktermios
*ts
;
887 int rts
, cts
, txflow
, rxflow
, xany
;
889 ch
= (struct moxa_str
*) tty
->driver_data
;
891 if (ts
->c_cflag
& CLOCAL
)
892 ch
->asyncflags
&= ~ASYNC_CHECK_CD
;
894 ch
->asyncflags
|= ASYNC_CHECK_CD
;
895 rts
= cts
= txflow
= rxflow
= xany
= 0;
896 if (ts
->c_cflag
& CRTSCTS
)
898 if (ts
->c_iflag
& IXON
)
900 if (ts
->c_iflag
& IXOFF
)
902 if (ts
->c_iflag
& IXANY
)
904 MoxaPortFlowCtrl(ch
->port
, rts
, cts
, txflow
, rxflow
, xany
);
905 MoxaPortSetTermio(ch
->port
, ts
, tty_get_baud_rate(tty
));
908 static int block_till_ready(struct tty_struct
*tty
, struct file
*filp
,
911 DECLARE_WAITQUEUE(wait
,current
);
914 int do_clocal
= C_CLOCAL(tty
);
917 * If the device is in the middle of being closed, then block
918 * until it's done, and then try again.
920 if (tty_hung_up_p(filp
) || (ch
->asyncflags
& ASYNC_CLOSING
)) {
921 if (ch
->asyncflags
& ASYNC_CLOSING
)
922 interruptible_sleep_on(&ch
->close_wait
);
923 #ifdef SERIAL_DO_RESTART
924 if (ch
->asyncflags
& ASYNC_HUP_NOTIFY
)
927 return (-ERESTARTSYS
);
933 * If non-blocking mode is set, then make the check up front
936 if (filp
->f_flags
& O_NONBLOCK
) {
937 ch
->asyncflags
|= ASYNC_NORMAL_ACTIVE
;
941 * Block waiting for the carrier detect and the line to become free
944 add_wait_queue(&ch
->open_wait
, &wait
);
945 #ifdef SERIAL_DEBUG_OPEN
946 printk("block_til_ready before block: ttys%d, count = %d\n",
947 ch
->line
, ch
->count
);
949 spin_lock_irqsave(&moxa_lock
, flags
);
950 if (!tty_hung_up_p(filp
))
953 spin_unlock_irqrestore(&moxa_lock
, flags
);
956 set_current_state(TASK_INTERRUPTIBLE
);
957 if (tty_hung_up_p(filp
) ||
958 !(ch
->asyncflags
& ASYNC_INITIALIZED
)) {
959 #ifdef SERIAL_DO_RESTART
960 if (ch
->asyncflags
& ASYNC_HUP_NOTIFY
)
963 retval
= -ERESTARTSYS
;
969 if (!(ch
->asyncflags
& ASYNC_CLOSING
) && (do_clocal
||
970 MoxaPortDCDON(ch
->port
)))
973 if (signal_pending(current
)) {
974 retval
= -ERESTARTSYS
;
979 set_current_state(TASK_RUNNING
);
980 remove_wait_queue(&ch
->open_wait
, &wait
);
982 spin_lock_irqsave(&moxa_lock
, flags
);
983 if (!tty_hung_up_p(filp
))
986 spin_unlock_irqrestore(&moxa_lock
, flags
);
987 #ifdef SERIAL_DEBUG_OPEN
988 printk("block_til_ready after blocking: ttys%d, count = %d\n",
989 ch
->line
, ch
->count
);
993 /* FIXME: review to see if we need to use set_bit on these */
994 ch
->asyncflags
|= ASYNC_NORMAL_ACTIVE
;
998 static void setup_empty_event(struct tty_struct
*tty
)
1000 struct moxa_str
*ch
= tty
->driver_data
;
1001 unsigned long flags
;
1003 spin_lock_irqsave(&moxa_lock
, flags
);
1004 ch
->statusflags
|= EMPTYWAIT
;
1005 mod_timer(&moxaEmptyTimer
[ch
->port
], jiffies
+ HZ
);
1006 spin_unlock_irqrestore(&moxa_lock
, flags
);
1009 static void check_xmit_empty(unsigned long data
)
1011 struct moxa_str
*ch
;
1013 ch
= (struct moxa_str
*) data
;
1014 del_timer(&moxaEmptyTimer
[ch
->port
]);
1015 if (ch
->tty
&& (ch
->statusflags
& EMPTYWAIT
)) {
1016 if (MoxaPortTxQueue(ch
->port
) == 0) {
1017 ch
->statusflags
&= ~EMPTYWAIT
;
1018 tty_wakeup(ch
->tty
);
1021 mod_timer(&moxaEmptyTimer
[ch
->port
], jiffies
+ HZ
);
1023 ch
->statusflags
&= ~EMPTYWAIT
;
1026 static void shut_down(struct moxa_str
*ch
)
1028 struct tty_struct
*tp
;
1030 if (!(ch
->asyncflags
& ASYNC_INITIALIZED
))
1035 MoxaPortDisable(ch
->port
);
1038 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1040 if (tp
->termios
->c_cflag
& HUPCL
)
1041 MoxaPortLineCtrl(ch
->port
, 0, 0);
1043 ch
->asyncflags
&= ~ASYNC_INITIALIZED
;
1046 static void receive_data(struct moxa_str
*ch
)
1048 struct tty_struct
*tp
;
1049 struct ktermios
*ts
;
1050 unsigned long flags
;
1056 /**************************************************
1057 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1058 *****************************************************/
1060 MoxaPortFlushData(ch
->port
, 0);
1063 spin_lock_irqsave(&moxa_lock
, flags
);
1064 MoxaPortReadData(ch
->port
, tp
);
1065 spin_unlock_irqrestore(&moxa_lock
, flags
);
1066 tty_schedule_flip(tp
);
1069 #define Magic_code 0x404
1072 * System Configuration
1075 * for C218 BIOS initialization
1077 #define C218_ConfBase 0x800
1078 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1079 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1080 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1081 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1082 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1083 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1084 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1085 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1086 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1087 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1089 #define C218_LoadBuf 0x0F00
1090 #define C218_KeyCode 0x218
1091 #define CP204J_KeyCode 0x204
1094 * for C320 BIOS initialization
1096 #define C320_ConfBase 0x800
1097 #define C320_LoadBuf 0x0f00
1098 #define STS_init 0x05 /* for C320_status */
1100 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1101 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1102 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1103 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1104 #define C320check_sum C320_ConfBase + 8 /* WORD */
1105 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1106 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1107 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1109 #define C320_KeyCode 0x320
1111 #define FixPage_addr 0x0000 /* starting addr of static page */
1112 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1113 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1114 #define Control_reg 0x1ff0 /* select page and reset control */
1115 #define HW_reset 0x80
1120 #define FC_CardReset 0x80
1121 #define FC_ChannelReset 1 /* C320 firmware not supported */
1122 #define FC_EnableCH 2
1123 #define FC_DisableCH 3
1124 #define FC_SetParam 4
1125 #define FC_SetMode 5
1126 #define FC_SetRate 6
1127 #define FC_LineControl 7
1128 #define FC_LineStatus 8
1129 #define FC_XmitControl 9
1130 #define FC_FlushQueue 10
1131 #define FC_SendBreak 11
1132 #define FC_StopBreak 12
1133 #define FC_LoopbackON 13
1134 #define FC_LoopbackOFF 14
1135 #define FC_ClrIrqTable 15
1136 #define FC_SendXon 16
1137 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1138 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1139 #define FC_SetBreakIrq 19
1140 #define FC_SetLineIrq 20
1141 #define FC_SetFlowCtl 21
1142 #define FC_GenIrq 22
1143 #define FC_InCD180 23
1144 #define FC_OutCD180 24
1145 #define FC_InUARTreg 23
1146 #define FC_OutUARTreg 24
1147 #define FC_SetXonXoff 25
1148 #define FC_OutCD180CCR 26
1149 #define FC_ExtIQueue 27
1150 #define FC_ExtOQueue 28
1151 #define FC_ClrLineIrq 29
1152 #define FC_HWFlowCtl 30
1153 #define FC_GetClockRate 35
1154 #define FC_SetBaud 36
1155 #define FC_SetDataMode 41
1156 #define FC_GetCCSR 43
1157 #define FC_GetDataError 45
1158 #define FC_RxControl 50
1159 #define FC_ImmSend 51
1160 #define FC_SetXonState 52
1161 #define FC_SetXoffState 53
1162 #define FC_SetRxFIFOTrig 54
1163 #define FC_SetTxFIFOCnt 55
1164 #define FC_UnixRate 56
1165 #define FC_UnixResetTimer 57
1167 #define RxFIFOTrig1 0
1168 #define RxFIFOTrig4 1
1169 #define RxFIFOTrig8 2
1170 #define RxFIFOTrig14 3
1175 #define DRAM_global 0
1176 #define INT_data (DRAM_global + 0)
1177 #define Config_base (DRAM_global + 0x108)
1179 #define IRQindex (INT_data + 0)
1180 #define IRQpending (INT_data + 4)
1181 #define IRQtable (INT_data + 8)
1186 #define IntrRx 0x01 /* receiver data O.K. */
1187 #define IntrTx 0x02 /* transmit buffer empty */
1188 #define IntrFunc 0x04 /* function complete */
1189 #define IntrBreak 0x08 /* received break */
1190 #define IntrLine 0x10 /* line status change
1192 #define IntrIntr 0x20 /* received INTR code */
1193 #define IntrQuit 0x40 /* received QUIT code */
1194 #define IntrEOF 0x80 /* received EOF code */
1196 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1197 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1199 #define Magic_no (Config_base + 0)
1200 #define Card_model_no (Config_base + 2)
1201 #define Total_ports (Config_base + 4)
1202 #define Module_cnt (Config_base + 8)
1203 #define Module_no (Config_base + 10)
1204 #define Timer_10ms (Config_base + 14)
1205 #define Disable_IRQ (Config_base + 20)
1206 #define TMS320_PORT1 (Config_base + 22)
1207 #define TMS320_PORT2 (Config_base + 24)
1208 #define TMS320_CLOCK (Config_base + 26)
1211 * DATA BUFFER in DRAM
1213 #define Extern_table 0x400 /* Base address of the external table
1214 (24 words * 64) total 3K bytes
1215 (24 words * 128) total 6K bytes */
1216 #define Extern_size 0x60 /* 96 bytes */
1217 #define RXrptr 0x00 /* read pointer for RX buffer */
1218 #define RXwptr 0x02 /* write pointer for RX buffer */
1219 #define TXrptr 0x04 /* read pointer for TX buffer */
1220 #define TXwptr 0x06 /* write pointer for TX buffer */
1221 #define HostStat 0x08 /* IRQ flag and general flag */
1222 #define FlagStat 0x0A
1223 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1224 /* x x x x | | | | */
1225 /* | | | + CTS flow */
1226 /* | | +--- RTS flow */
1227 /* | +------ TX Xon/Xoff */
1228 /* +--------- RX Xon/Xoff */
1229 #define Break_cnt 0x0E /* received break count */
1230 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1231 #define RX_mask 0x12
1232 #define TX_mask 0x14
1233 #define Ofs_rxb 0x16
1234 #define Ofs_txb 0x18
1235 #define Page_rxb 0x1A
1236 #define Page_txb 0x1C
1237 #define EndPage_rxb 0x1E
1238 #define EndPage_txb 0x20
1239 #define Data_error 0x22
1240 #define RxTrigger 0x28
1241 #define TxTrigger 0x2a
1243 #define rRXwptr 0x34
1244 #define Low_water 0x36
1246 #define FuncCode 0x40
1247 #define FuncArg 0x42
1248 #define FuncArg1 0x44
1250 #define C218rx_size 0x2000 /* 8K bytes */
1251 #define C218tx_size 0x8000 /* 32K bytes */
1253 #define C218rx_mask (C218rx_size - 1)
1254 #define C218tx_mask (C218tx_size - 1)
1256 #define C320p8rx_size 0x2000
1257 #define C320p8tx_size 0x8000
1258 #define C320p8rx_mask (C320p8rx_size - 1)
1259 #define C320p8tx_mask (C320p8tx_size - 1)
1261 #define C320p16rx_size 0x2000
1262 #define C320p16tx_size 0x4000
1263 #define C320p16rx_mask (C320p16rx_size - 1)
1264 #define C320p16tx_mask (C320p16tx_size - 1)
1266 #define C320p24rx_size 0x2000
1267 #define C320p24tx_size 0x2000
1268 #define C320p24rx_mask (C320p24rx_size - 1)
1269 #define C320p24tx_mask (C320p24tx_size - 1)
1271 #define C320p32rx_size 0x1000
1272 #define C320p32tx_size 0x1000
1273 #define C320p32rx_mask (C320p32rx_size - 1)
1274 #define C320p32tx_mask (C320p32tx_size - 1)
1276 #define Page_size 0x2000
1277 #define Page_mask (Page_size - 1)
1278 #define C218rx_spage 3
1279 #define C218tx_spage 4
1280 #define C218rx_pageno 1
1281 #define C218tx_pageno 4
1282 #define C218buf_pageno 5
1284 #define C320p8rx_spage 3
1285 #define C320p8tx_spage 4
1286 #define C320p8rx_pgno 1
1287 #define C320p8tx_pgno 4
1288 #define C320p8buf_pgno 5
1290 #define C320p16rx_spage 3
1291 #define C320p16tx_spage 4
1292 #define C320p16rx_pgno 1
1293 #define C320p16tx_pgno 2
1294 #define C320p16buf_pgno 3
1296 #define C320p24rx_spage 3
1297 #define C320p24tx_spage 4
1298 #define C320p24rx_pgno 1
1299 #define C320p24tx_pgno 1
1300 #define C320p24buf_pgno 2
1302 #define C320p32rx_spage 3
1303 #define C320p32tx_ofs C320p32rx_size
1304 #define C320p32tx_spage 3
1305 #define C320p32buf_pgno 1
1310 #define WakeupRx 0x01
1311 #define WakeupTx 0x02
1312 #define WakeupBreak 0x08
1313 #define WakeupLine 0x10
1314 #define WakeupIntr 0x20
1315 #define WakeupQuit 0x40
1316 #define WakeupEOF 0x80 /* used in VTIME control */
1317 #define WakeupRxTrigger 0x100
1318 #define WakeupTxTrigger 0x200
1322 #define Rx_over 0x01
1323 #define Xoff_state 0x02
1324 #define Tx_flowOff 0x04
1325 #define Tx_enable 0x08
1326 #define CTS_state 0x10
1327 #define DSR_state 0x20
1328 #define DCD_state 0x80
1332 #define CTS_FlowCtl 1
1333 #define RTS_FlowCtl 2
1334 #define Tx_FlowCtl 4
1335 #define Rx_FlowCtl 8
1336 #define IXM_IXANY 0x10
1338 #define LowWater 128
1346 /* mode definition */
1352 #define MX_STOP1 0x00
1353 #define MX_STOP15 0x04
1354 #define MX_STOP2 0x08
1356 #define MX_PARNONE 0x00
1357 #define MX_PAREVEN 0x40
1358 #define MX_PARODD 0xC0
1363 #define QueryPort MAX_PORTS
1369 int rxcnt
[MAX_PORTS
];
1370 int txcnt
[MAX_PORTS
];
1372 typedef struct mon_str mon_st
;
1374 #define DCD_changed 0x01
1375 #define DCD_oldstate 0x80
1377 static unsigned char moxaBuff
[10240];
1378 static void __iomem
*moxaIntNdx
[MAX_BOARDS
];
1379 static void __iomem
*moxaIntPend
[MAX_BOARDS
];
1380 static void __iomem
*moxaIntTable
[MAX_BOARDS
];
1381 static char moxaChkPort
[MAX_PORTS
];
1382 static char moxaLineCtrl
[MAX_PORTS
];
1383 static void __iomem
*moxaTableAddr
[MAX_PORTS
];
1384 static long moxaCurBaud
[MAX_PORTS
];
1385 static char moxaDCDState
[MAX_PORTS
];
1386 static char moxaLowChkFlag
[MAX_PORTS
];
1387 static int moxaLowWaterChk
;
1388 static int moxaCard
;
1389 static mon_st moxaLog
;
1390 static int moxaFuncTout
= HZ
/ 2;
1391 static ushort moxaBreakCnt
[MAX_PORTS
];
1393 static void moxadelay(int);
1394 static void moxafunc(void __iomem
*, int, ushort
);
1395 static void wait_finish(void __iomem
*);
1396 static void low_water_check(void __iomem
*);
1397 static int moxaloadbios(int, unsigned char __user
*, int);
1398 static int moxafindcard(int);
1399 static int moxaload320b(int, unsigned char __user
*, int);
1400 static int moxaloadcode(int, unsigned char __user
*, int);
1401 static int moxaloadc218(int, void __iomem
*, int);
1402 static int moxaloadc320(int, void __iomem
*, int, int *);
1404 /*****************************************************************************
1405 * Driver level functions: *
1406 * 1. MoxaDriverInit(void); *
1407 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1408 * 3. MoxaDriverPoll(void); *
1409 *****************************************************************************/
1410 void MoxaDriverInit(void)
1414 moxaFuncTout
= HZ
/ 2; /* 500 mini-seconds */
1417 moxaLowWaterChk
= 0;
1418 for (i
= 0; i
< MAX_PORTS
; i
++) {
1420 moxaLowChkFlag
[i
] = 0;
1421 moxaLineCtrl
[i
] = 0;
1422 moxaLog
.rxcnt
[i
] = 0;
1423 moxaLog
.txcnt
[i
] = 0;
1428 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1429 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1430 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1431 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1432 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1433 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1434 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1435 #define MOXA_GETDATACOUNT (MOXA + 23)
1436 #define MOXA_GET_IOQUEUE (MOXA + 27)
1437 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1438 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1439 #define MOXA_GET_MAJOR (MOXA + 63)
1440 #define MOXA_GET_CUMAJOR (MOXA + 64)
1441 #define MOXA_GETMSTATUS (MOXA + 65)
1455 static struct moxaq_str temp_queue
[MAX_PORTS
];
1456 static struct dl_str dltmp
;
1458 void MoxaPortFlushData(int port
, int mode
)
1460 void __iomem
*ofsAddr
;
1461 if ((mode
< 0) || (mode
> 2))
1463 ofsAddr
= moxaTableAddr
[port
];
1464 moxafunc(ofsAddr
, FC_FlushQueue
, mode
);
1466 moxaLowChkFlag
[port
] = 0;
1467 low_water_check(ofsAddr
);
1471 int MoxaDriverIoctl(unsigned int cmd
, unsigned long arg
, int port
)
1475 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1476 void __user
*argp
= (void __user
*)arg
;
1478 if (port
== QueryPort
) {
1479 if ((cmd
!= MOXA_GET_CONF
) && (cmd
!= MOXA_INIT_DRIVER
) &&
1480 (cmd
!= MOXA_LOAD_BIOS
) && (cmd
!= MOXA_FIND_BOARD
) && (cmd
!= MOXA_LOAD_C320B
) &&
1481 (cmd
!= MOXA_LOAD_CODE
) && (cmd
!= MOXA_GETDATACOUNT
) &&
1482 (cmd
!= MOXA_GET_IOQUEUE
) && (cmd
!= MOXA_GET_MAJOR
) &&
1483 (cmd
!= MOXA_GET_CUMAJOR
) && (cmd
!= MOXA_GETMSTATUS
))
1488 if(copy_to_user(argp
, &moxa_boards
, MAX_BOARDS
* sizeof(moxa_board_conf
)))
1491 case MOXA_INIT_DRIVER
:
1492 if ((int) arg
== 0x404)
1495 case MOXA_GETDATACOUNT
:
1496 moxaLog
.tick
= jiffies
;
1497 if(copy_to_user(argp
, &moxaLog
, sizeof(mon_st
)))
1500 case MOXA_FLUSH_QUEUE
:
1501 MoxaPortFlushData(port
, arg
);
1503 case MOXA_GET_IOQUEUE
:
1504 for (i
= 0; i
< MAX_PORTS
; i
++) {
1505 if (moxaChkPort
[i
]) {
1506 temp_queue
[i
].inq
= MoxaPortRxQueue(i
);
1507 temp_queue
[i
].outq
= MoxaPortTxQueue(i
);
1510 if(copy_to_user(argp
, temp_queue
, sizeof(struct moxaq_str
) * MAX_PORTS
))
1513 case MOXA_GET_OQUEUE
:
1514 i
= MoxaPortTxQueue(port
);
1515 return put_user(i
, (unsigned long __user
*)argp
);
1516 case MOXA_GET_IQUEUE
:
1517 i
= MoxaPortRxQueue(port
);
1518 return put_user(i
, (unsigned long __user
*)argp
);
1519 case MOXA_GET_MAJOR
:
1520 if(copy_to_user(argp
, &ttymajor
, sizeof(int)))
1523 case MOXA_GET_CUMAJOR
:
1525 if(copy_to_user(argp
, &i
, sizeof(int)))
1528 case MOXA_GETMSTATUS
:
1529 for (i
= 0; i
< MAX_PORTS
; i
++) {
1531 GMStatus
[i
].dcd
= 0;
1532 GMStatus
[i
].dsr
= 0;
1533 GMStatus
[i
].cts
= 0;
1534 if (!moxaChkPort
[i
]) {
1537 status
= MoxaPortLineStatus(moxaChannels
[i
].port
);
1539 GMStatus
[i
].cts
= 1;
1541 GMStatus
[i
].dsr
= 1;
1543 GMStatus
[i
].dcd
= 1;
1546 if (!moxaChannels
[i
].tty
|| !moxaChannels
[i
].tty
->termios
)
1547 GMStatus
[i
].cflag
= moxaChannels
[i
].cflag
;
1549 GMStatus
[i
].cflag
= moxaChannels
[i
].tty
->termios
->c_cflag
;
1551 if(copy_to_user(argp
, GMStatus
, sizeof(struct mxser_mstatus
) * MAX_PORTS
))
1555 return (-ENOIOCTLCMD
);
1556 case MOXA_LOAD_BIOS
:
1557 case MOXA_FIND_BOARD
:
1558 case MOXA_LOAD_C320B
:
1559 case MOXA_LOAD_CODE
:
1560 if (!capable(CAP_SYS_RAWIO
))
1565 if(copy_from_user(&dltmp
, argp
, sizeof(struct dl_str
)))
1567 if(dltmp
.cardno
< 0 || dltmp
.cardno
>= MAX_BOARDS
)
1572 case MOXA_LOAD_BIOS
:
1573 i
= moxaloadbios(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1575 case MOXA_FIND_BOARD
:
1576 return moxafindcard(dltmp
.cardno
);
1577 case MOXA_LOAD_C320B
:
1578 moxaload320b(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1579 default: /* to keep gcc happy */
1581 case MOXA_LOAD_CODE
:
1582 i
= moxaloadcode(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1590 int MoxaDriverPoll(void)
1592 register ushort temp
;
1594 void __iomem
*ofsAddr
;
1600 for (card
= 0; card
< MAX_BOARDS
; card
++) {
1601 if (loadstat
[card
] == 0)
1603 if ((ports
= moxa_boards
[card
].numPorts
) == 0)
1605 if (readb(moxaIntPend
[card
]) == 0xff) {
1606 ip
= moxaIntTable
[card
] + readb(moxaIntNdx
[card
]);
1607 p
= card
* MAX_PORTS_PER_BOARD
;
1609 for (port
= 0; port
< ports
; port
+= 2, p
++) {
1610 if ((temp
= readw(ip
+ port
)) != 0) {
1611 writew(0, ip
+ port
);
1612 ofsAddr
= moxaTableAddr
[p
];
1614 writew(readw(ofsAddr
+ HostStat
) & ~WakeupTx
, ofsAddr
+ HostStat
);
1615 if (temp
& IntrBreak
) {
1618 if (temp
& IntrLine
) {
1619 if (readb(ofsAddr
+ FlagStat
) & DCD_state
) {
1620 if ((moxaDCDState
[p
] & DCD_oldstate
) == 0)
1621 moxaDCDState
[p
] = (DCD_oldstate
|
1624 if (moxaDCDState
[p
] & DCD_oldstate
)
1625 moxaDCDState
[p
] = DCD_changed
;
1630 writeb(0, moxaIntPend
[card
]);
1632 if (moxaLowWaterChk
) {
1633 p
= card
* MAX_PORTS_PER_BOARD
;
1634 for (port
= 0; port
< ports
; port
++, p
++) {
1635 if (moxaLowChkFlag
[p
]) {
1636 moxaLowChkFlag
[p
] = 0;
1637 ofsAddr
= moxaTableAddr
[p
];
1638 low_water_check(ofsAddr
);
1643 moxaLowWaterChk
= 0;
1647 /*****************************************************************************
1648 * Card level function: *
1649 * 1. MoxaPortsOfCard(int cardno); *
1650 *****************************************************************************/
1651 int MoxaPortsOfCard(int cardno
)
1654 if (moxa_boards
[cardno
].boardType
== 0)
1656 return (moxa_boards
[cardno
].numPorts
);
1659 /*****************************************************************************
1660 * Port level functions: *
1661 * 1. MoxaPortIsValid(int port); *
1662 * 2. MoxaPortEnable(int port); *
1663 * 3. MoxaPortDisable(int port); *
1664 * 4. MoxaPortGetMaxBaud(int port); *
1665 * 6. MoxaPortSetBaud(int port, long baud); *
1666 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1667 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1668 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1669 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1670 * 12. MoxaPortLineStatus(int port); *
1671 * 13. MoxaPortDCDChange(int port); *
1672 * 14. MoxaPortDCDON(int port); *
1673 * 15. MoxaPortFlushData(int port, int mode); *
1674 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1675 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1676 * 20. MoxaPortTxQueue(int port); *
1677 * 21. MoxaPortTxFree(int port); *
1678 * 22. MoxaPortRxQueue(int port); *
1679 * 24. MoxaPortTxDisable(int port); *
1680 * 25. MoxaPortTxEnable(int port); *
1681 * 27. MoxaPortResetBrkCnt(int port); *
1682 * 30. MoxaPortSendBreak(int port, int ticks); *
1683 *****************************************************************************/
1685 * Moxa Port Number Description:
1687 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1688 * the port number using in MOXA driver functions will be 0 to 31 for
1689 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1690 * to 127 for fourth. For example, if you setup three MOXA boards,
1691 * first board is C218, second board is C320-16 and third board is
1692 * C320-32. The port number of first board (C218 - 8 ports) is from
1693 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1694 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1695 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1696 * 127 will be invalid.
1699 * Moxa Functions Description:
1701 * Function 1: Driver initialization routine, this routine must be
1702 * called when initialized driver.
1704 * void MoxaDriverInit();
1707 * Function 2: Moxa driver private IOCTL command processing.
1709 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1711 * unsigned int cmd : IOCTL command
1712 * unsigned long arg : IOCTL argument
1713 * int port : port number (0 - 127)
1720 * Function 3: Moxa driver polling process routine.
1722 * int MoxaDriverPoll(void);
1724 * return: 0 ; polling O.K.
1725 * -1 : no any Moxa card.
1728 * Function 4: Get the ports of this card.
1730 * int MoxaPortsOfCard(int cardno);
1732 * int cardno : card number (0 - 3)
1734 * return: 0 : this card is invalid
1738 * Function 5: Check this port is valid or invalid
1740 * int MoxaPortIsValid(int port);
1741 * int port : port number (0 - 127, ref port description)
1743 * return: 0 : this port is invalid
1744 * 1 : this port is valid
1747 * Function 6: Enable this port to start Tx/Rx data.
1749 * void MoxaPortEnable(int port);
1750 * int port : port number (0 - 127)
1753 * Function 7: Disable this port
1755 * void MoxaPortDisable(int port);
1756 * int port : port number (0 - 127)
1759 * Function 8: Get the maximun available baud rate of this port.
1761 * long MoxaPortGetMaxBaud(int port);
1762 * int port : port number (0 - 127)
1764 * return: 0 : this port is invalid
1765 * 38400/57600/115200 bps
1768 * Function 10: Setting baud rate of this port.
1770 * long MoxaPortSetBaud(int port, long baud);
1771 * int port : port number (0 - 127)
1772 * long baud : baud rate (50 - 115200)
1774 * return: 0 : this port is invalid or baud < 50
1775 * 50 - 115200 : the real baud rate set to the port, if
1776 * the argument baud is large than maximun
1777 * available baud rate, the real setting
1778 * baud rate will be the maximun baud rate.
1781 * Function 12: Configure the port.
1783 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1784 * int port : port number (0 - 127)
1785 * struct ktermios * termio : termio structure pointer
1786 * speed_t baud : baud rate
1788 * return: -1 : this port is invalid or termio == NULL
1792 * Function 13: Get the DTR/RTS state of this port.
1794 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1795 * int port : port number (0 - 127)
1796 * int * dtrState : pointer to INT to receive the current DTR
1797 * state. (if NULL, this function will not
1798 * write to this address)
1799 * int * rtsState : pointer to INT to receive the current RTS
1800 * state. (if NULL, this function will not
1801 * write to this address)
1803 * return: -1 : this port is invalid
1807 * Function 14: Setting the DTR/RTS output state of this port.
1809 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1810 * int port : port number (0 - 127)
1811 * int dtrState : DTR output state (0: off, 1: on)
1812 * int rtsState : RTS output state (0: off, 1: on)
1815 * Function 15: Setting the flow control of this port.
1817 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1818 * int txFlow,int xany);
1819 * int port : port number (0 - 127)
1820 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1821 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1822 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1823 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1824 * int xany : S/W XANY flow control (0: no, 1: yes)
1827 * Function 16: Get ths line status of this port
1829 * int MoxaPortLineStatus(int port);
1830 * int port : port number (0 - 127)
1832 * return: Bit 0 - CTS state (0: off, 1: on)
1833 * Bit 1 - DSR state (0: off, 1: on)
1834 * Bit 2 - DCD state (0: off, 1: on)
1837 * Function 17: Check the DCD state has changed since the last read
1840 * int MoxaPortDCDChange(int port);
1841 * int port : port number (0 - 127)
1843 * return: 0 : no changed
1844 * 1 : DCD has changed
1847 * Function 18: Check ths current DCD state is ON or not.
1849 * int MoxaPortDCDON(int port);
1850 * int port : port number (0 - 127)
1852 * return: 0 : DCD off
1856 * Function 19: Flush the Rx/Tx buffer data of this port.
1858 * void MoxaPortFlushData(int port, int mode);
1859 * int port : port number (0 - 127)
1861 * 0 : flush the Rx buffer
1862 * 1 : flush the Tx buffer
1863 * 2 : flush the Rx and Tx buffer
1866 * Function 20: Write data.
1868 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1869 * int port : port number (0 - 127)
1870 * unsigned char * buffer : pointer to write data buffer.
1871 * int length : write data length
1873 * return: 0 - length : real write data length
1876 * Function 21: Read data.
1878 * int MoxaPortReadData(int port, struct tty_struct *tty);
1879 * int port : port number (0 - 127)
1880 * struct tty_struct *tty : tty for data
1882 * return: 0 - length : real read data length
1885 * Function 24: Get the Tx buffer current queued data bytes
1887 * int MoxaPortTxQueue(int port);
1888 * int port : port number (0 - 127)
1890 * return: .. : Tx buffer current queued data bytes
1893 * Function 25: Get the Tx buffer current free space
1895 * int MoxaPortTxFree(int port);
1896 * int port : port number (0 - 127)
1898 * return: .. : Tx buffer current free space
1901 * Function 26: Get the Rx buffer current queued data bytes
1903 * int MoxaPortRxQueue(int port);
1904 * int port : port number (0 - 127)
1906 * return: .. : Rx buffer current queued data bytes
1909 * Function 28: Disable port data transmission.
1911 * void MoxaPortTxDisable(int port);
1912 * int port : port number (0 - 127)
1915 * Function 29: Enable port data transmission.
1917 * void MoxaPortTxEnable(int port);
1918 * int port : port number (0 - 127)
1921 * Function 31: Get the received BREAK signal count and reset it.
1923 * int MoxaPortResetBrkCnt(int port);
1924 * int port : port number (0 - 127)
1926 * return: 0 - .. : BREAK signal count
1929 * Function 34: Send out a BREAK signal.
1931 * void MoxaPortSendBreak(int port, int ms100);
1932 * int port : port number (0 - 127)
1933 * int ms100 : break signal time interval.
1934 * unit: 100 mini-second. if ms100 == 0, it will
1935 * send out a about 250 ms BREAK signal.
1938 int MoxaPortIsValid(int port
)
1943 if (moxaChkPort
[port
] == 0)
1948 void MoxaPortEnable(int port
)
1950 void __iomem
*ofsAddr
;
1951 int MoxaPortLineStatus(int);
1952 short lowwater
= 512;
1954 ofsAddr
= moxaTableAddr
[port
];
1955 writew(lowwater
, ofsAddr
+ Low_water
);
1956 moxaBreakCnt
[port
] = 0;
1957 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
1958 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
1959 moxafunc(ofsAddr
, FC_SetBreakIrq
, 0);
1961 writew(readw(ofsAddr
+ HostStat
) | WakeupBreak
, ofsAddr
+ HostStat
);
1964 moxafunc(ofsAddr
, FC_SetLineIrq
, Magic_code
);
1965 moxafunc(ofsAddr
, FC_FlushQueue
, 2);
1967 moxafunc(ofsAddr
, FC_EnableCH
, Magic_code
);
1968 MoxaPortLineStatus(port
);
1971 void MoxaPortDisable(int port
)
1973 void __iomem
*ofsAddr
= moxaTableAddr
[port
];
1975 moxafunc(ofsAddr
, FC_SetFlowCtl
, 0); /* disable flow control */
1976 moxafunc(ofsAddr
, FC_ClrLineIrq
, Magic_code
);
1977 writew(0, ofsAddr
+ HostStat
);
1978 moxafunc(ofsAddr
, FC_DisableCH
, Magic_code
);
1981 long MoxaPortGetMaxBaud(int port
)
1983 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
1984 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
))
1991 long MoxaPortSetBaud(int port
, long baud
)
1993 void __iomem
*ofsAddr
;
1997 if ((baud
< 50L) || ((max
= MoxaPortGetMaxBaud(port
)) == 0))
1999 ofsAddr
= moxaTableAddr
[port
];
2003 clock
= 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2004 else if (max
== 57600L)
2005 clock
= 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2007 clock
= 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2009 moxafunc(ofsAddr
, FC_SetBaud
, val
);
2011 moxaCurBaud
[port
] = baud
;
2015 int MoxaPortSetTermio(int port
, struct ktermios
*termio
, speed_t baud
)
2017 void __iomem
*ofsAddr
;
2021 if (moxaChkPort
[port
] == 0 || termio
== 0)
2023 ofsAddr
= moxaTableAddr
[port
];
2024 cflag
= termio
->c_cflag
; /* termio->c_cflag */
2026 mode
= termio
->c_cflag
& CSIZE
;
2029 else if (mode
== CS6
)
2031 else if (mode
== CS7
)
2033 else if (mode
== CS8
)
2036 if (termio
->c_cflag
& CSTOPB
) {
2044 if (termio
->c_cflag
& PARENB
) {
2045 if (termio
->c_cflag
& PARODD
)
2052 moxafunc(ofsAddr
, FC_SetDataMode
, (ushort
) mode
);
2054 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
2055 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
2056 if (baud
>= 921600L)
2059 MoxaPortSetBaud(port
, baud
);
2061 if (termio
->c_iflag
& (IXON
| IXOFF
| IXANY
)) {
2062 writeb(termio
->c_cc
[VSTART
], ofsAddr
+ FuncArg
);
2063 writeb(termio
->c_cc
[VSTOP
], ofsAddr
+ FuncArg1
);
2064 writeb(FC_SetXonXoff
, ofsAddr
+ FuncCode
);
2065 wait_finish(ofsAddr
);
2071 int MoxaPortGetLineOut(int port
, int *dtrState
, int *rtsState
)
2074 if (!MoxaPortIsValid(port
))
2077 if (moxaLineCtrl
[port
] & DTR_ON
)
2083 if (moxaLineCtrl
[port
] & RTS_ON
)
2091 void MoxaPortLineCtrl(int port
, int dtr
, int rts
)
2093 void __iomem
*ofsAddr
;
2096 ofsAddr
= moxaTableAddr
[port
];
2102 moxaLineCtrl
[port
] = mode
;
2103 moxafunc(ofsAddr
, FC_LineControl
, mode
);
2106 void MoxaPortFlowCtrl(int port
, int rts
, int cts
, int txflow
, int rxflow
, int txany
)
2108 void __iomem
*ofsAddr
;
2111 ofsAddr
= moxaTableAddr
[port
];
2114 mode
|= RTS_FlowCtl
;
2116 mode
|= CTS_FlowCtl
;
2123 moxafunc(ofsAddr
, FC_SetFlowCtl
, mode
);
2126 int MoxaPortLineStatus(int port
)
2128 void __iomem
*ofsAddr
;
2131 ofsAddr
= moxaTableAddr
[port
];
2132 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
2133 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
2134 moxafunc(ofsAddr
, FC_LineStatus
, 0);
2135 val
= readw(ofsAddr
+ FuncArg
);
2137 val
= readw(ofsAddr
+ FlagStat
) >> 4;
2142 if ((moxaDCDState
[port
] & DCD_oldstate
) == 0)
2143 moxaDCDState
[port
] = (DCD_oldstate
| DCD_changed
);
2145 if (moxaDCDState
[port
] & DCD_oldstate
)
2146 moxaDCDState
[port
] = DCD_changed
;
2152 int MoxaPortDCDChange(int port
)
2156 if (moxaChkPort
[port
] == 0)
2158 n
= moxaDCDState
[port
];
2159 moxaDCDState
[port
] &= ~DCD_changed
;
2164 int MoxaPortDCDON(int port
)
2168 if (moxaChkPort
[port
] == 0)
2170 if (moxaDCDState
[port
] & DCD_oldstate
)
2177 int MoxaPortWriteData(int port
, unsigned char * buffer
, int len
)
2182 ushort head
, tx_mask
, spage
, epage
;
2183 ushort pageno
, pageofs
, bufhead
;
2184 void __iomem
*baseAddr
, *ofsAddr
, *ofs
;
2186 ofsAddr
= moxaTableAddr
[port
];
2187 baseAddr
= moxaBaseAddr
[port
/ MAX_PORTS_PER_BOARD
];
2188 tx_mask
= readw(ofsAddr
+ TX_mask
);
2189 spage
= readw(ofsAddr
+ Page_txb
);
2190 epage
= readw(ofsAddr
+ EndPage_txb
);
2191 tail
= readw(ofsAddr
+ TXwptr
);
2192 head
= readw(ofsAddr
+ TXrptr
);
2193 c
= (head
> tail
) ? (head
- tail
- 1)
2194 : (head
- tail
+ tx_mask
);
2197 moxaLog
.txcnt
[port
] += c
;
2199 if (spage
== epage
) {
2200 bufhead
= readw(ofsAddr
+ Ofs_txb
);
2201 writew(spage
, baseAddr
+ Control_reg
);
2204 len
= head
- tail
- 1;
2206 len
= tx_mask
+ 1 - tail
;
2207 len
= (c
> len
) ? len
: c
;
2208 ofs
= baseAddr
+ DynPage_addr
+ bufhead
+ tail
;
2209 for (i
= 0; i
< len
; i
++)
2210 writeb(*buffer
++, ofs
+ i
);
2211 tail
= (tail
+ len
) & tx_mask
;
2214 writew(tail
, ofsAddr
+ TXwptr
);
2217 pageno
= spage
+ (tail
>> 13);
2218 pageofs
= tail
& Page_mask
;
2220 cnt
= Page_size
- pageofs
;
2224 writeb(pageno
, baseAddr
+ Control_reg
);
2225 ofs
= baseAddr
+ DynPage_addr
+ pageofs
;
2226 for (i
= 0; i
< cnt
; i
++)
2227 writeb(*buffer
++, ofs
+ i
);
2229 writew((tail
+ len
) & tx_mask
, ofsAddr
+ TXwptr
);
2232 if (++pageno
== epage
)
2237 writeb(1, ofsAddr
+ CD180TXirq
); /* start to send */
2241 int MoxaPortReadData(int port
, struct tty_struct
*tty
)
2243 register ushort head
, pageofs
;
2244 int i
, count
, cnt
, len
, total
, remain
;
2245 ushort tail
, rx_mask
, spage
, epage
;
2246 ushort pageno
, bufhead
;
2247 void __iomem
*baseAddr
, *ofsAddr
, *ofs
;
2249 ofsAddr
= moxaTableAddr
[port
];
2250 baseAddr
= moxaBaseAddr
[port
/ MAX_PORTS_PER_BOARD
];
2251 head
= readw(ofsAddr
+ RXrptr
);
2252 tail
= readw(ofsAddr
+ RXwptr
);
2253 rx_mask
= readw(ofsAddr
+ RX_mask
);
2254 spage
= readw(ofsAddr
+ Page_rxb
);
2255 epage
= readw(ofsAddr
+ EndPage_rxb
);
2256 count
= (tail
>= head
) ? (tail
- head
)
2257 : (tail
- head
+ rx_mask
+ 1);
2262 remain
= count
- total
;
2263 moxaLog
.rxcnt
[port
] += total
;
2265 if (spage
== epage
) {
2266 bufhead
= readw(ofsAddr
+ Ofs_rxb
);
2267 writew(spage
, baseAddr
+ Control_reg
);
2272 len
= rx_mask
+ 1 - head
;
2273 len
= (count
> len
) ? len
: count
;
2274 ofs
= baseAddr
+ DynPage_addr
+ bufhead
+ head
;
2275 for (i
= 0; i
< len
; i
++)
2276 tty_insert_flip_char(tty
, readb(ofs
+ i
), TTY_NORMAL
);
2277 head
= (head
+ len
) & rx_mask
;
2280 writew(head
, ofsAddr
+ RXrptr
);
2283 pageno
= spage
+ (head
>> 13);
2284 pageofs
= head
& Page_mask
;
2286 cnt
= Page_size
- pageofs
;
2290 writew(pageno
, baseAddr
+ Control_reg
);
2291 ofs
= baseAddr
+ DynPage_addr
+ pageofs
;
2292 for (i
= 0; i
< cnt
; i
++)
2293 tty_insert_flip_char(tty
, readb(ofs
+ i
), TTY_NORMAL
);
2295 writew((head
+ len
) & rx_mask
, ofsAddr
+ RXrptr
);
2298 if (++pageno
== epage
)
2303 if ((readb(ofsAddr
+ FlagStat
) & Xoff_state
) && (remain
< LowWater
)) {
2304 moxaLowWaterChk
= 1;
2305 moxaLowChkFlag
[port
] = 1;
2311 int MoxaPortTxQueue(int port
)
2313 void __iomem
*ofsAddr
;
2314 ushort rptr
, wptr
, mask
;
2317 ofsAddr
= moxaTableAddr
[port
];
2318 rptr
= readw(ofsAddr
+ TXrptr
);
2319 wptr
= readw(ofsAddr
+ TXwptr
);
2320 mask
= readw(ofsAddr
+ TX_mask
);
2321 len
= (wptr
- rptr
) & mask
;
2325 int MoxaPortTxFree(int port
)
2327 void __iomem
*ofsAddr
;
2328 ushort rptr
, wptr
, mask
;
2331 ofsAddr
= moxaTableAddr
[port
];
2332 rptr
= readw(ofsAddr
+ TXrptr
);
2333 wptr
= readw(ofsAddr
+ TXwptr
);
2334 mask
= readw(ofsAddr
+ TX_mask
);
2335 len
= mask
- ((wptr
- rptr
) & mask
);
2339 int MoxaPortRxQueue(int port
)
2341 void __iomem
*ofsAddr
;
2342 ushort rptr
, wptr
, mask
;
2345 ofsAddr
= moxaTableAddr
[port
];
2346 rptr
= readw(ofsAddr
+ RXrptr
);
2347 wptr
= readw(ofsAddr
+ RXwptr
);
2348 mask
= readw(ofsAddr
+ RX_mask
);
2349 len
= (wptr
- rptr
) & mask
;
2354 void MoxaPortTxDisable(int port
)
2356 void __iomem
*ofsAddr
;
2358 ofsAddr
= moxaTableAddr
[port
];
2359 moxafunc(ofsAddr
, FC_SetXoffState
, Magic_code
);
2362 void MoxaPortTxEnable(int port
)
2364 void __iomem
*ofsAddr
;
2366 ofsAddr
= moxaTableAddr
[port
];
2367 moxafunc(ofsAddr
, FC_SetXonState
, Magic_code
);
2371 int MoxaPortResetBrkCnt(int port
)
2374 cnt
= moxaBreakCnt
[port
];
2375 moxaBreakCnt
[port
] = 0;
2380 void MoxaPortSendBreak(int port
, int ms100
)
2382 void __iomem
*ofsAddr
;
2384 ofsAddr
= moxaTableAddr
[port
];
2386 moxafunc(ofsAddr
, FC_SendBreak
, Magic_code
);
2387 moxadelay(ms100
* (HZ
/ 10));
2389 moxafunc(ofsAddr
, FC_SendBreak
, Magic_code
);
2390 moxadelay(HZ
/ 4); /* 250 ms */
2392 moxafunc(ofsAddr
, FC_StopBreak
, Magic_code
);
2395 static int moxa_get_serial_info(struct moxa_str
*info
,
2396 struct serial_struct __user
*retinfo
)
2398 struct serial_struct tmp
;
2400 memset(&tmp
, 0, sizeof(tmp
));
2401 tmp
.type
= info
->type
;
2402 tmp
.line
= info
->port
;
2405 tmp
.flags
= info
->asyncflags
;
2406 tmp
.baud_base
= 921600;
2407 tmp
.close_delay
= info
->close_delay
;
2408 tmp
.closing_wait
= info
->closing_wait
;
2409 tmp
.custom_divisor
= 0;
2411 if(copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
2417 static int moxa_set_serial_info(struct moxa_str
*info
,
2418 struct serial_struct __user
*new_info
)
2420 struct serial_struct new_serial
;
2422 if(copy_from_user(&new_serial
, new_info
, sizeof(new_serial
)))
2425 if ((new_serial
.irq
!= 0) ||
2426 (new_serial
.port
!= 0) ||
2427 // (new_serial.type != info->type) ||
2428 (new_serial
.custom_divisor
!= 0) ||
2429 (new_serial
.baud_base
!= 921600))
2432 if (!capable(CAP_SYS_ADMIN
)) {
2433 if (((new_serial
.flags
& ~ASYNC_USR_MASK
) !=
2434 (info
->asyncflags
& ~ASYNC_USR_MASK
)))
2437 info
->close_delay
= new_serial
.close_delay
* HZ
/ 100;
2438 info
->closing_wait
= new_serial
.closing_wait
* HZ
/ 100;
2441 new_serial
.flags
= (new_serial
.flags
& ~ASYNC_FLAGS
);
2442 new_serial
.flags
|= (info
->asyncflags
& ASYNC_FLAGS
);
2444 if (new_serial
.type
== PORT_16550A
) {
2445 MoxaSetFifo(info
->port
, 1);
2447 MoxaSetFifo(info
->port
, 0);
2450 info
->type
= new_serial
.type
;
2456 /*****************************************************************************
2457 * Static local functions: *
2458 *****************************************************************************/
2460 * moxadelay - delays a specified number ticks
2462 static void moxadelay(int tick
)
2464 unsigned long st
, et
;
2468 while (time_before(jiffies
, et
));
2471 static void moxafunc(void __iomem
*ofsAddr
, int cmd
, ushort arg
)
2474 writew(arg
, ofsAddr
+ FuncArg
);
2475 writew(cmd
, ofsAddr
+ FuncCode
);
2476 wait_finish(ofsAddr
);
2479 static void wait_finish(void __iomem
*ofsAddr
)
2484 while (readw(ofsAddr
+ FuncCode
) != 0) {
2486 if ((j
- i
) > moxaFuncTout
) {
2492 static void low_water_check(void __iomem
*ofsAddr
)
2495 ushort rptr
, wptr
, mask
;
2497 if (readb(ofsAddr
+ FlagStat
) & Xoff_state
) {
2498 rptr
= readw(ofsAddr
+ RXrptr
);
2499 wptr
= readw(ofsAddr
+ RXwptr
);
2500 mask
= readw(ofsAddr
+ RX_mask
);
2501 len
= (wptr
- rptr
) & mask
;
2502 if (len
<= Low_water
)
2503 moxafunc(ofsAddr
, FC_SendXon
, 0);
2507 static int moxaloadbios(int cardno
, unsigned char __user
*tmp
, int len
)
2509 void __iomem
*baseAddr
;
2512 if(copy_from_user(moxaBuff
, tmp
, len
))
2514 baseAddr
= moxaBaseAddr
[cardno
];
2515 writeb(HW_reset
, baseAddr
+ Control_reg
); /* reset */
2516 moxadelay(1); /* delay 10 ms */
2517 for (i
= 0; i
< 4096; i
++)
2518 writeb(0, baseAddr
+ i
); /* clear fix page */
2519 for (i
= 0; i
< len
; i
++)
2520 writeb(moxaBuff
[i
], baseAddr
+ i
); /* download BIOS */
2521 writeb(0, baseAddr
+ Control_reg
); /* restart */
2525 static int moxafindcard(int cardno
)
2527 void __iomem
*baseAddr
;
2530 baseAddr
= moxaBaseAddr
[cardno
];
2531 switch (moxa_boards
[cardno
].boardType
) {
2532 case MOXA_BOARD_C218_ISA
:
2533 case MOXA_BOARD_C218_PCI
:
2534 if ((tmp
= readw(baseAddr
+ C218_key
)) != C218_KeyCode
) {
2538 case MOXA_BOARD_CP204J
:
2539 if ((tmp
= readw(baseAddr
+ C218_key
)) != CP204J_KeyCode
) {
2544 if ((tmp
= readw(baseAddr
+ C320_key
)) != C320_KeyCode
) {
2547 if ((tmp
= readw(baseAddr
+ C320_status
)) != STS_init
) {
2554 static int moxaload320b(int cardno
, unsigned char __user
*tmp
, int len
)
2556 void __iomem
*baseAddr
;
2559 if(len
> sizeof(moxaBuff
))
2561 if(copy_from_user(moxaBuff
, tmp
, len
))
2563 baseAddr
= moxaBaseAddr
[cardno
];
2564 writew(len
- 7168 - 2, baseAddr
+ C320bapi_len
);
2565 writeb(1, baseAddr
+ Control_reg
); /* Select Page 1 */
2566 for (i
= 0; i
< 7168; i
++)
2567 writeb(moxaBuff
[i
], baseAddr
+ DynPage_addr
+ i
);
2568 writeb(2, baseAddr
+ Control_reg
); /* Select Page 2 */
2569 for (i
= 0; i
< (len
- 7168); i
++)
2570 writeb(moxaBuff
[i
+ 7168], baseAddr
+ DynPage_addr
+ i
);
2574 static int moxaloadcode(int cardno
, unsigned char __user
*tmp
, int len
)
2576 void __iomem
*baseAddr
, *ofsAddr
;
2577 int retval
, port
, i
;
2579 if(copy_from_user(moxaBuff
, tmp
, len
))
2581 baseAddr
= moxaBaseAddr
[cardno
];
2582 switch (moxa_boards
[cardno
].boardType
) {
2583 case MOXA_BOARD_C218_ISA
:
2584 case MOXA_BOARD_C218_PCI
:
2585 case MOXA_BOARD_CP204J
:
2586 retval
= moxaloadc218(cardno
, baseAddr
, len
);
2589 port
= cardno
* MAX_PORTS_PER_BOARD
;
2590 for (i
= 0; i
< moxa_boards
[cardno
].numPorts
; i
++, port
++) {
2591 moxaChkPort
[port
] = 1;
2592 moxaCurBaud
[port
] = 9600L;
2593 moxaDCDState
[port
] = 0;
2594 moxaTableAddr
[port
] = baseAddr
+ Extern_table
+ Extern_size
* i
;
2595 ofsAddr
= moxaTableAddr
[port
];
2596 writew(C218rx_mask
, ofsAddr
+ RX_mask
);
2597 writew(C218tx_mask
, ofsAddr
+ TX_mask
);
2598 writew(C218rx_spage
+ i
* C218buf_pageno
, ofsAddr
+ Page_rxb
);
2599 writew(readw(ofsAddr
+ Page_rxb
) + C218rx_pageno
, ofsAddr
+ EndPage_rxb
);
2601 writew(C218tx_spage
+ i
* C218buf_pageno
, ofsAddr
+ Page_txb
);
2602 writew(readw(ofsAddr
+ Page_txb
) + C218tx_pageno
, ofsAddr
+ EndPage_txb
);
2607 retval
= moxaloadc320(cardno
, baseAddr
, len
,
2608 &moxa_boards
[cardno
].numPorts
);
2611 port
= cardno
* MAX_PORTS_PER_BOARD
;
2612 for (i
= 0; i
< moxa_boards
[cardno
].numPorts
; i
++, port
++) {
2613 moxaChkPort
[port
] = 1;
2614 moxaCurBaud
[port
] = 9600L;
2615 moxaDCDState
[port
] = 0;
2616 moxaTableAddr
[port
] = baseAddr
+ Extern_table
+ Extern_size
* i
;
2617 ofsAddr
= moxaTableAddr
[port
];
2618 if (moxa_boards
[cardno
].numPorts
== 8) {
2619 writew(C320p8rx_mask
, ofsAddr
+ RX_mask
);
2620 writew(C320p8tx_mask
, ofsAddr
+ TX_mask
);
2621 writew(C320p8rx_spage
+ i
* C320p8buf_pgno
, ofsAddr
+ Page_rxb
);
2622 writew(readw(ofsAddr
+ Page_rxb
) + C320p8rx_pgno
, ofsAddr
+ EndPage_rxb
);
2623 writew(C320p8tx_spage
+ i
* C320p8buf_pgno
, ofsAddr
+ Page_txb
);
2624 writew(readw(ofsAddr
+ Page_txb
) + C320p8tx_pgno
, ofsAddr
+ EndPage_txb
);
2626 } else if (moxa_boards
[cardno
].numPorts
== 16) {
2627 writew(C320p16rx_mask
, ofsAddr
+ RX_mask
);
2628 writew(C320p16tx_mask
, ofsAddr
+ TX_mask
);
2629 writew(C320p16rx_spage
+ i
* C320p16buf_pgno
, ofsAddr
+ Page_rxb
);
2630 writew(readw(ofsAddr
+ Page_rxb
) + C320p16rx_pgno
, ofsAddr
+ EndPage_rxb
);
2631 writew(C320p16tx_spage
+ i
* C320p16buf_pgno
, ofsAddr
+ Page_txb
);
2632 writew(readw(ofsAddr
+ Page_txb
) + C320p16tx_pgno
, ofsAddr
+ EndPage_txb
);
2634 } else if (moxa_boards
[cardno
].numPorts
== 24) {
2635 writew(C320p24rx_mask
, ofsAddr
+ RX_mask
);
2636 writew(C320p24tx_mask
, ofsAddr
+ TX_mask
);
2637 writew(C320p24rx_spage
+ i
* C320p24buf_pgno
, ofsAddr
+ Page_rxb
);
2638 writew(readw(ofsAddr
+ Page_rxb
) + C320p24rx_pgno
, ofsAddr
+ EndPage_rxb
);
2639 writew(C320p24tx_spage
+ i
* C320p24buf_pgno
, ofsAddr
+ Page_txb
);
2640 writew(readw(ofsAddr
+ Page_txb
), ofsAddr
+ EndPage_txb
);
2641 } else if (moxa_boards
[cardno
].numPorts
== 32) {
2642 writew(C320p32rx_mask
, ofsAddr
+ RX_mask
);
2643 writew(C320p32tx_mask
, ofsAddr
+ TX_mask
);
2644 writew(C320p32tx_ofs
, ofsAddr
+ Ofs_txb
);
2645 writew(C320p32rx_spage
+ i
* C320p32buf_pgno
, ofsAddr
+ Page_rxb
);
2646 writew(readb(ofsAddr
+ Page_rxb
), ofsAddr
+ EndPage_rxb
);
2647 writew(C320p32tx_spage
+ i
* C320p32buf_pgno
, ofsAddr
+ Page_txb
);
2648 writew(readw(ofsAddr
+ Page_txb
), ofsAddr
+ EndPage_txb
);
2653 loadstat
[cardno
] = 1;
2657 static int moxaloadc218(int cardno
, void __iomem
*baseAddr
, int len
)
2660 int i
, j
, len1
, len2
;
2661 ushort usum
, *ptr
, keycode
;
2663 if (moxa_boards
[cardno
].boardType
== MOXA_BOARD_CP204J
)
2664 keycode
= CP204J_KeyCode
;
2666 keycode
= C218_KeyCode
;
2669 ptr
= (ushort
*) moxaBuff
;
2670 for (i
= 0; i
< len1
; i
++)
2671 usum
+= le16_to_cpu(*(ptr
+ i
));
2677 len2
= (len1
> 2048) ? 2048 : len1
;
2679 for (i
= 0; i
< len2
<< 1; i
++)
2680 writeb(moxaBuff
[i
+ j
], baseAddr
+ C218_LoadBuf
+ i
);
2683 writew(len2
, baseAddr
+ C218DLoad_len
);
2684 writew(0, baseAddr
+ C218_key
);
2685 for (i
= 0; i
< 100; i
++) {
2686 if (readw(baseAddr
+ C218_key
) == keycode
)
2688 moxadelay(1); /* delay 10 ms */
2690 if (readw(baseAddr
+ C218_key
) != keycode
) {
2694 writew(0, baseAddr
+ C218DLoad_len
);
2695 writew(usum
, baseAddr
+ C218check_sum
);
2696 writew(0, baseAddr
+ C218_key
);
2697 for (i
= 0; i
< 100; i
++) {
2698 if (readw(baseAddr
+ C218_key
) == keycode
)
2700 moxadelay(1); /* delay 10 ms */
2703 } while ((readb(baseAddr
+ C218chksum_ok
) != 1) && (retry
< 3));
2704 if (readb(baseAddr
+ C218chksum_ok
) != 1) {
2707 writew(0, baseAddr
+ C218_key
);
2708 for (i
= 0; i
< 100; i
++) {
2709 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2711 moxadelay(1); /* delay 10 ms */
2713 if (readw(baseAddr
+ Magic_no
) != Magic_code
) {
2716 writew(1, baseAddr
+ Disable_IRQ
);
2717 writew(0, baseAddr
+ Magic_no
);
2718 for (i
= 0; i
< 100; i
++) {
2719 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2721 moxadelay(1); /* delay 10 ms */
2723 if (readw(baseAddr
+ Magic_no
) != Magic_code
) {
2727 moxaIntNdx
[cardno
] = baseAddr
+ IRQindex
;
2728 moxaIntPend
[cardno
] = baseAddr
+ IRQpending
;
2729 moxaIntTable
[cardno
] = baseAddr
+ IRQtable
;
2733 static int moxaloadc320(int cardno
, void __iomem
*baseAddr
, int len
, int *numPorts
)
2736 int i
, j
, wlen
, len2
, retry
;
2741 uptr
= (ushort
*) moxaBuff
;
2742 for (i
= 0; i
< wlen
; i
++)
2743 usum
+= le16_to_cpu(uptr
[i
]);
2754 for (i
= 0; i
< len2
; i
++)
2755 writeb(moxaBuff
[j
+ i
], baseAddr
+ C320_LoadBuf
+ i
);
2758 writew(len2
, baseAddr
+ C320DLoad_len
);
2759 writew(0, baseAddr
+ C320_key
);
2760 for (i
= 0; i
< 10; i
++) {
2761 if (readw(baseAddr
+ C320_key
) == C320_KeyCode
)
2765 if (readw(baseAddr
+ C320_key
) != C320_KeyCode
)
2768 writew(0, baseAddr
+ C320DLoad_len
);
2769 writew(usum
, baseAddr
+ C320check_sum
);
2770 writew(0, baseAddr
+ C320_key
);
2771 for (i
= 0; i
< 10; i
++) {
2772 if (readw(baseAddr
+ C320_key
) == C320_KeyCode
)
2777 } while ((readb(baseAddr
+ C320chksum_ok
) != 1) && (retry
< 3));
2778 if (readb(baseAddr
+ C320chksum_ok
) != 1)
2780 writew(0, baseAddr
+ C320_key
);
2781 for (i
= 0; i
< 600; i
++) {
2782 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2786 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2789 if (moxa_boards
[cardno
].busType
== MOXA_BUS_TYPE_PCI
) { /* ASIC board */
2790 writew(0x3800, baseAddr
+ TMS320_PORT1
);
2791 writew(0x3900, baseAddr
+ TMS320_PORT2
);
2792 writew(28499, baseAddr
+ TMS320_CLOCK
);
2794 writew(0x3200, baseAddr
+ TMS320_PORT1
);
2795 writew(0x3400, baseAddr
+ TMS320_PORT2
);
2796 writew(19999, baseAddr
+ TMS320_CLOCK
);
2798 writew(1, baseAddr
+ Disable_IRQ
);
2799 writew(0, baseAddr
+ Magic_no
);
2800 for (i
= 0; i
< 500; i
++) {
2801 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2805 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2808 j
= readw(baseAddr
+ Module_cnt
);
2812 writew(j
, baseAddr
+ Module_no
);
2813 writew(0, baseAddr
+ Magic_no
);
2814 for (i
= 0; i
< 600; i
++) {
2815 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2819 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2822 moxaIntNdx
[cardno
] = baseAddr
+ IRQindex
;
2823 moxaIntPend
[cardno
] = baseAddr
+ IRQpending
;
2824 moxaIntTable
[cardno
] = baseAddr
+ IRQtable
;
2828 static void MoxaSetFifo(int port
, int enable
)
2830 void __iomem
*ofsAddr
= moxaTableAddr
[port
];
2833 moxafunc(ofsAddr
, FC_SetRxFIFOTrig
, 0);
2834 moxafunc(ofsAddr
, FC_SetTxFIFOCnt
, 1);
2836 moxafunc(ofsAddr
, FC_SetRxFIFOTrig
, 3);
2837 moxafunc(ofsAddr
, FC_SetTxFIFOCnt
, 16);